Safety razor



Jan.A 22, 1935. G. s. JENSEN SAFETY RAZOR Filed 1pm 1o, 1934 L 'WITNESSES 5mg@ w Patented Jan. 2.2, 1935 STATE S;

eArEN,T oF-F1ce i 8 Claims.

This invention relates to a safety razor of that type in which, by virtue of the manipulating of certain parts thereof', the blade of the razor mayv be putin position in the razor for use, and also to permitr removal of the blade,

Without the necessity of detaching partsof the razorv fori cleaning and other" purposes incidental to the use of the razor.

An object of the invention is the provision of 'improvements in a razor of the indicated character, whereby to readily carry` out the aforee saidresults.

Another object of the invention is the provisionof improvements in arazor of the indicated character requiring a simple manipulation toenable the removal of theA blade.

A further objectv oil the invention is the provision of a razor havingk the aforesaid features and-the additional featureswhereby to lex the blade to vary the euttingeffect thereof, and to obtainy the cutting effect desired by reason of indicating means embodied by the razor.

A` further object of the-invention is toprovide a safety razor with means to 'conveniently pick up the blades.

`The nature of the invention and its distinguishing advantages will appear fromtheffollowing specification read in connectionwith-the' accompanying drawing, in' which:

Figure 1 is a side view of a safety razor embodying thev features of the invention;

Figure 2 is a central longitudinal'section;

Figure 3 is a side View and part section'showingv certain features of the razor;

Figure 4 is a viewY partly in. elevation and partly in section, showing parts 'off the razor in arelationfready for movement of theistem andblade` clamping member carried thereby, to blade releasing position;

Figure y5is a part section' and part elevation showing the stem moved into its projected position, and the blade clamping member. carried therebydisposed toI permit removal ofthe blade;

Figure 6 is a plan View of the guard;

Figure 7 is a vievv` of the underface of the clamping member;

Figure'` shows a type of blade used in the razor;

Figure 9 is an enlarged section on the line 50 9 9 of Figure 2;

Figuref'l() isan enlarged section on the line 10 1O of Figure 2; and

Figures 1l and 12L shovv modifications.

As shown inthe-drawing, the razorv includes cooperative membersv l()y and 11, theformer being a blade clamping member andthe latter be ing a guardirnember. The membersl: andy 1111 are designedzand adapted to aecomm'odateadou'- ble edged blade 12, as shown'inl Figure: 8, the' blade having a centrallyv disposed? aperture-13. 5 to receive a boss le on the guard member 11i.` The clamping member 10 has afrece'ss 15`there`- in Whichissimilar in shapeto theshape of the' boss $14.:zonthe guard member. 11 toreoeivethe boss 14.. vBoth members-10 and 11V are'concavo convexfincross. section in order to iiexlthe'blad'e to obtain' the desiredk cutting or shaving effect'. The clamping member 10'is' pivotally connected, as at' 16,` with: one end of:` a ste'mil?. A' 'pin18 extends transversely through the otherend of the stern 17. The pin 18fis disposed .parallelfto theipivot 16;' The guard member'l'lhasa'1 tubular shank 19 rigidly conneotedtherewith centrally thereof and which opens through" the guard member '11. The stem17 isof cross sectional size to be received in the shank 19Jfor 'axialandfroe tational movement. The shankr 19 fis reducedin diameter for Aportions offits. length to produce shoulders20f and21", respectively, and also has a threaded extremity 22. The shank 19 Valsohas slotstherein diametrically opposite eacli other; each of Whiohlconsi'sts' of a straight'longitudinal portion 23, extending parallel-'to thellongitiidiiial axis of the shank; anda curvedportion24, ex tendingl around the shank approximately ninety degrees (909). from theV straight portion23- intermediate tubularmernber 25.has"rotary' move-` ment'on the shank 19. This tubularV member25 hasv aslot therein which corresponds to the forn' of slots in" the shankv 19, and 'consists' of aVv straight longitudinalportion 26l disposed parallelto' the longitudinalaxisi of the member'25; anda curved portion i 27 "extends .approximately 'ninety degrees around "the memberl 25 from tlielstraiglit portionv 26. The slotV in the ytubular member 25'` also has a portion 28'vvhich provides fcam means 29 onthe' member 25- for apurpose to be explained. While a'single slot hasbeenl shown in the' tubular' member A25 it' is to 'be understood that' two'similar slots may be provided in' Said 45'? member. An outertubular member 301fha's ro'-v tatory movement' on the tubular'member25. Av

' hollow knob 31 is screvvedon the threadedex-r tremity 22 of the shank 19 and servestohold the tubular membersl 25 and 30 against 'axial 50 a notch 33 in the tubular member 30 to cause the tubular member to rotate with the tubular member 30. The knob 31 carries a part 34 which projects exteriorly therefrom. A resilient means in the form of a coil spring 35 is adapted to be extended within the shank 19, and one end thereof bears against the stem 17 and its other end bears against the part 34. The said spring 35 serves to impart axial movement to the stem 17 and constantly acts on the stern.

In assembling the several parts of the razor the stem 17 is inserted in the shank 19. The tubular member 25 is then arranged on the shank 19 after which the pin 18 is extended transversely through the stem 17, with one end of the pin disposed in one of the slots inthe shank 19 and the other end of the pin disposed in the other slot in the shank 19 and the slot in the tubular member 25. The tubular member is then arranged on the tubular member 25 after which the projection 32 is bent into position in the notch 33. The spring is then inserted in the shank 19 after which the knob 31 is screwed on the extremity 22 of the shank. From the foregoing it will be understood that the stem 17 may be moved into a retracted position,A as shown in Figure 2, and also be moved into a projected position, as shown in Figure 5. Assuming that the stem 17 is in its projected positionthe clamping member 10 may be moved on its pivot 16 with respect to the stem 17 to be disposed in a plane approximately parallel to the longitudinal axis of the stem. This will make it possible to slip a blade, such as the blade 12, over the clamping member 10 and stem into position on the guard member 11, with the boss 14 of the latter in the aperture 13 in the blade 12. I'he clamping member 10 may then be swung on its pivot 16 to a clamping position perpendicular to the stem 17, after which pressure may be exerted with one hand on the clamping member 10, causing the stem 17 to move inwardly while the shank is held with the other hand. The pin, which is disposed in the outer ends of the slots when the stem 17 is in its projected position, will be guided by the walls of the curved slot portions 24 of the shank 19, causing the stem 17 to turn one-quarter of a revolution, or ninety degrees (90), as it is moving axially and inwardly until the clamping member 10 is brought into clamping engagement with the blade. When the clamping member 10 is brought into the clamping position the ends of the pin 18 will be disposed in the straight slot portions 23 and 26, as shown in Figures 3 and 4. By holding the shank 19 with one hand the tubular member 30 may then be rotated to the right with the other hand, thereby causing the cam means 29 to act on the pin 18 and'so bring the clamping member 10 into clamping contact with the blade 12 with the `desired effect, that is to say, to flex the blade to'vary the cutting or shavingeffect. The cam means 29 and the pin 18 serve not only releasably to retain the stem 17 in a retracted position with its clamping member 10 in clamping engagement with the blade, but also to flex the blade to vary the cutting eiect thereof as may be desired. By holding the shank 19 with one hand and turning the tubular member 30 to the left with the other hand the pin 18 will enter the straight slot portion 26 in the tubular member 25, whereupon the spring 35 comes into play Vand causes axial Vmovement of the stemv 17, permitted by the pin riding in the` straight slot portions 23 and 26 until the pin reaches the curved slot portions 24 and 27 whose walls, acting on the pin 18, cause the stem to turn ninety degrees (90) to the projected position, after which the clamping member 10 may be swung to its blade-releasing position, as shown in Figure 5. If desired, the clamping member 10 as connected with the stem may be unbalanced so that it will fall to blade-releasing position as the stem 17 is moved into its projected position. The blade 12 may be readily removed by slipping the same over the clamping member 10 and projecting part of the stem 17.

The razor embodies indicating means so that the user may obtain the desired cutting or shaving effect. To this end, the knob 31 on a portion thereof has a scale 36, and the tubular member 30 has a pointer 37 which co-operates with the scale 36 to indicate various degrees of iiexure of the blade 12 by the clamping member 10. In this connection it is obvious that the cam means 29 and pin 18 serve in conjunction with the scale 36 and its pointer 37.

In accordance with another feature of the razor, the part 34 is magnetized so that it may be used to conveniently pick up the blades so as to avoid the cutting of the fingers in handling the blade.

Attention is called to the fact that the shank 19, tubular member 30 and the knob 31 constitute a handle for the razor, as well as performing the functions hereinbefore set forth in enabling the placing of the blade in the razor and enabling the removal of the blade from the razor.

In Figures l1 and 12 there is shown a modiied form of blade clamping member operating means, the said means being substantially similar to that .shown in Figures 1 to 5, with the exception that the outer tubular member 30 is secured to the shank as at in lieu of the projection 32 and notch 33, while the knob 31 is secured as at 41 to the intermediate tubular member 25 instead of the shank 19. In this form of the invention the tubular member 30' may be held with one hand, while the knob 31 is turned to the left with the other hand to release the stem for outward movement from its retracted position by the spring 35 to its projected position for the removal of the blade. The movement of the stem 17 to the retracted position will be similar to that hereinbefore described. In this modification the indicating means will have the scale 36 on the tubular member 30', while the pointer 37 will be on the knob 31.

What I claim is:

1. In a safety razor, a blade clamping member, a guard on which a blade may rest to be clamped by said clamping member, a'stem having axial and rotational movement to a projected and a retracted position with respect to said guard, said clamping member being mounted on the stem for movement with respect thereto, means to guide the stem for axial and rotational movement to its projected position, so that the clamping member may be moved with respect to the stern to arrange a blade on the guard or to remove the blade, and said means also serving tc retain the stem in its retracted position, to hold the clamping member in a blade clamping position, and also to release said stem for the aforesaid movement and purpose, and a spring acting on said stem and coacting with said rst means to cause the aforesaid movement of the stem.

2. In a safety razor, a blade clamping member,

a guard on which a blade may rest and be clamped by said clamping member, a stem having axial and rotational movement to aA projected and a retracted position with respect to said guard, said clamping member being mounted on the stem for movement with respect thereto, means to cause the axial and rotational movement of the stem to its projected position, so that the clamping member may be moved with respect to the stem to arrange a blade on the guard or to remove the blade, and said means also serving to retain the stem in its retracted position, to hold the clamping member in a blade clamping position, and also to release said stem for the aforesaid movement and purpose, said means including a spring acting on said stem to cause axial movement of the stem.

3. In a safety razor, a blade clamping member, a guard on which a blade may rest and be clamped by said clamping member, a tubular shank rigidly connected with said guard and opening through the latter, a stem extending in the shank and having axial and rotational movement therein to a projected and a retracted position, said clamping member being mounted on said stem for movement with respect thereto, so that the clamping member may be moved with respect to the stem when the stem is in its projected position to arrange a blade on the guard or to remove the blade, a projection on the stem, and means which co-operates with said projection to cause the axial and rotational movement ci the Stem to its projected position, for the aforesaid purpose, said means including a resilient element which constantly tends to cause the axial movement of said stem, said means also co-operating with said projection to hold the stem in its retracted position.

4. In a safety razor, a blade clamping member, a guard on which a blade may rest and be clamped by said clamping member, a tubular shank rigidly connected with said guard and opening through the latter, a stem extending in the shank and having axial and rotational movement therein to a projected and a retracted position, said clamping member being mounted on said stem for movement with respect thereto, so that the clamping member may be moved with respect to the stem when the stem is in its projected position, to arrange a blade on the guard or to remove the blade, a projection on the stem, said shank having a slot therein consisting of a straight portion parallel to the longitudinal axis of the shank and a curved portion extending from the straight portion approximately ninety degrees around the shank, a tubulai` turnable member surrounding said shank, said turnable member having a slot therein which corresponds to said iirst slot and which also has a portion to provide a retaining cam on the turnable member, said projection extending into the slots, the provision and arrangement being such that the cam coacts with the projection to hold said stem in retracted position, also that the turnable member may be turned to bring the straight portion of its slot in alinement with the projection, and resilient means acting on the stem, so that when the aforesaid alinement is eiected said resilient means will cause the stem to have axial and rotational movement by virtue of the projection and slots to its projected position for the aforesaid purpose.

5. In a safety razor, a stem having a blade clamping member pivotally connected therewith, a guard on which a blade may rest and be clamped by said clamping member, means on the guard to guide the stem for axial and rotational movement to a projected position with respect to said guard when subjected to axial movement, and resilient means to cause the axial movement of the stem, said clamping member being movable on its pivotal connection to a certain position, when the stem is in its projected position, so that a blade may be arranged in or be removed from the razor.

6. In a safety razor, a stem having a blade clamping member pivotally connected therewith, a guard on which a blade may rest and be clamped by said clamping member, means on the guard to guide the `stem for axial and rotational movement to a projected position with respect to said guard when subjected to axial movement, resilient means to cause the axial movement of the stem, said clamping member being movable on its pivotal connection to a certain position, when the stem is in its projected position, so that a blade may be arranged in or be removed from the razor, said resilient means allowing the stem to be returned to a retracted position and the clamping member to be moved into a clamping position by manipulating the clamping member, and means co-operating with the rst means to releasably retain the stem in the retracted position.

7. In a safety razor, a stem having a blade clamping member pivotally connected therewith, a guard on which a blade may rest and be clamped by said clamping member, means on the guard to guide the stem for axial and rotational movement to a projected position with respect to said guard when subjected to axial movement, resilient means to cause the axial movement of the stem, said clamping member being movable on its pivotal connection to a certain position, when the stem is in its projected position, so that a blade may be arranged in or be removed from the razor, said resilient means allowing the stem to be returned to a retracted position and the clamping .member to be moved into a clamping position by manipulating the clamping member, and means co-operating with the iirst means to releasably retain the stem in the retracted position and also to vary the clamping pressure of the clamping member.

8. In a safety razor, a stem having a blade clamping member connected therewith for movement with respect thereto, a guard on which a blade may rest and be clamped by said clamping member, means to rotate said stem about its own axis as the stem is moved axially inwardly and outwardly in opposite directions, resilient means which cause the axial outward movement of `the stem with respect to said guard to a projected position from a retracted position when the stem is released, so that a blade may be arranged in or be removed from the razor by moving the clamping member to a certain position with respect to the stem, when the latter is in the projected position, and means which coacts with the nrst means to releasably retain the stem in its retracted position, and also to retain the clamping member in its clamping position.

GUST-AV SCHOIEN JENSEN. 

